Some basic troubleshooting (apologies if you have already done this):
-
Verify the Digitize settings File > Edit settings
-
Check that the port name is the correct. You may want to check that there are not empty spaces,
0
instead ofO
, or other typos. -
Make sure that the port is not being used by any other software. E.g. the port is open in PuTTY, or in the same Matlab.
-
Is this connection issue fixed by reverting the change on the end lines in commit ff3ae10?